Carbureter.



S. GHRISTOFFBRSON, N. T. WOODS & W. E. JONES.

CARBURETER.

APPLICATION FILED DBO.30,1909.

2 SHEETS-SHEET 1.

Patented Nov. 22

S. UHRISTOPFERSON, N. T. WOODS & W. E. JONES.

CARBURETBR.

APPLIOATION FILED DEO.30,1909.

Patented Nov. 22, 1910.

2 SHEBTBSHEET 2.

WITNESSES;

SW06. W moss m V0.0 N M w W M a M nfb X n {m L SILAS CHRISTOIFFERSON,NELSON r. woons, AND WILLIAM E. JONES, or PORTLAND, OREGON, ASSIGNORS TOCHRISTOFFERSON-WOODS CARBURETOR (10., or PORTLAND, OREGON, A CORPORATIONor OREGON.

GARBURETER.

Specification of Letters Patent. Patented N 22, 1910, Application filedDecember 30, 1909. Serial No. 535,617.

To all whom it may concern: I

. Be it known that we, SILASHGHRISTOFFER- soN, NELSON T. WVoons, andTVILLIAM E. JoNEs, all of Portland, in the county of Multnomah and Stateof Oregon, havev invented certain new and useful Improvements inCarbureter s, ofwhich the following is a specification.

Our invention has for its object to'provide a carbureter of an improvedconstruction wherein the parts are designed and cooperate toautomatically regulate the supply of air and gasolene according to therunning speed of the engine.

The invention also providesa carbureter which will operate under amaximum efliciency, both at high, low and intermediate speeds, and whichwill operate with less throttling resistance than with other types ofcarburetors.

.The invention also has for its ob ect to provide an improved aircontrolling valve and mixing .cha'mberincluding means to as sist saidvalve in starting, and means to prevent pounding of the valve duringrapid regulation.

The invention also resides in those novel details of construction,combination and arrangement of parts, all of which will be first fullydescribed, and then be specifically pointed out in the appended claims,reference being hadto the accompanying drawings, in which Figure 1, is'acentral vertical longitudinal section of the invention, the parts beingin theirnon-running position in full lines and their fastest runningposition with the air valve giving maximum air supply-in dotted lines.Figs. 2, 3 and 4, are horizontal sections'respectively on the lines 2-2,3 3 and 44 of Fig. l.

Referring now to the accompanying drawings, in which like letters andnumerals indicate like parts in all of the figures the earbureter casingconsists of an outer wall 1 an inner wall 1 concentric therewith, and aninner wall 1 of frustoconical form that joins the walls 'l l at thebottom. The walls 1 l"l form a float chamber which is open at the topbut closed by an annular ring 6 to leave a central passage through thecasing.

The ring 6 i s heldcin place by a cap that is threaded into the casing 1at fl and bears 'ing threaded portion 2,

01 1 the ring 6. The cap 2 is formed with a pipe section 2 that projectsthrough the cap 2 into the central passage of the casing 1 and-1s formedwith an upwardly projectto receive the high speed adjustment nut 4 andthe union member 3, as clearly shown in the drawings.

The pipe section 2 has its lower end inter-- nally coned or beveled asat 2 and is also provided with shoulders 2 for a purpose hereinafter toappear. That' part of the pipe 2 that projects through the cap 2 has itswalls of less thickness as'at 2* than the.

remaining portion that projects above the cap 2, so as to provide theshoulder 2" above referred to and form a guide for the air.

valve 28 hereinafter again referred to.

5 is the throttle valve which operates in the pipe 2? and is held initsnormal posi tion by a screw 5 that prdjects through an arm 5 on thevalve stem and the manual movement of the valve 5 is effected through alever 5 that is moved in any desired manner.

Within the float chamber of thecasing 1 afloat 7 is held, the float 7being connected to a lever 10 that is pivoted on a pin 11 that passesthrough the side walls of a projectlon 1 of the casing, the projection 1formmg a chamber for the needle valve 14*. The va ve 14 is carried on 1a stem 14 that is threaded at 14 to receive a sleeve 13 and a jam nut15, the sleeve 18 connecting with the arms'12 of the lever 10 thatcarries the float 7 as shown in the drawings. The valve 14 has a guidepin that projects through the aperture 1 in the nipple l of thecasing 1. A nipple 16 is connected to the nipplel by a collar 17, asshown in Figs. 1 and 2,. of the drawings.

18 is the priming lever that is pivoted on a bracket 9 whichis held inplace by abearing nut 8 that threads into the projection I of the casingand has a bearing for the stem 14: of the valve 14, the priming lever 18having operative engagement with. the stem 14, as shown so that instarting,l the valve 14 may be manually opened, it necessary. .19 is thegasolene supply valve casing which has an internal bore, partly closednear itsupper end by a web having a valve passage 19, the upper endofthe valve casmg 19 being cupped at 19 to form a reservolr for thegasolene. Within the valve casber 7 0 the valve casing 19 by pi cs 20that are f rmed, in practice, with the casing 19and w ture forconveyingl float chamber to t e interiorof the valve casing 19, asclearly shown in'Fig. 4 of the drawlngs, the pipes 20.'also serving as asupport for the valve casing 19 andits carried parts.

Threaded on the valve casing 19 is an arm 24 that is held in place by acheck nut 25, the arm 24 having upwardly projecting cups pfeferab yintegral ich have an aper- 27 secured thereto to receive the coilsprings 30, the cups 27 being surrounded by other cups 29 carried by theair' valve 28, the cnips 27-29 and springs 30 forming bufler evi'ces. Acoi spring 26 is interposed between the arm 24 and the pipes 20 to holdsuch arm in engagement with the adjusting nut 25, it being understoodthat the arm 24 is not threaded on the casing 19, as-is the nut 25. Avalve seat 22 rests on the pipes 20 and is supported by the stem 19 aswell,

the valve seat 22 havin cut-away portions 22 to permit passage 0 thecups 27 and 29, and said valve seat 22 is held 1n place by a cone 21threaded on the casing 19 and engaging the seat 22. r

The air'valve 28 has an annular flange 28" which has an air passage 28cooperating with the cone 21 and a tubular portion 28 that receives therojectin part 2 of'the pipe 2 and the va ve 28 is urther provided withprojections 28 that carry sprmg'cups 31' in which balls 32 are held, theballs 32 being pressed to the open end of the cups 31 by a plunger 33and a coil spring 34, as shown in drawings, the balls 32 are adapted toengage the high speed adjusting nut 4 when the valve 28 has opened toits greatest limit. Ordinarily the valve 28 does not rest on the seat 22in practice, as it is advisable always to have'the air passage partlyopen. However, when desired, the nut 25 (see Fig. 1) may be unscrewed orlowered until the flange 28 will rest on the seat 22.

Operation: The

lows: Assume-the parts to be positioned as shown in Fig. 1, with thegasolene at its normal level, as shown, and it is desired to-start upthe engine.

The operator opens the'valve 23 the desired amount to permit the.gasolene to flow into the cup 19". He then opens pipe 2? into the enginecylinder the air'causthe gasolene from the-- manner in which ourinvention operates 1s best explained as 1501- the valve 14 at thepriminglever'18 to permit the gasolene to flow irito the'cup 19". Uponcranking up the engine the air will. be sucked through the valve passage28 'and ing-the gasolene in the cup 19 to be va or- 1zed andcommmgled'with the air to o'rm the working mixture. The conical forma-ttion of the member 21 and its relation to the passage 28 insures the airto pass on all sides around the gasolene'cup 19 and form,

as it were, a sheave or inclosu're of air around the gasolene cup, thusinsurin'g'an abundant supply of air to the gasoleneat all times. 'As theengine starts up the suction caused by the engine in drawing in its chares'will cause the valve 28 to rise from the ull line position shown inFig. 1,11 I,

ward the dotted lineposition shown in Fig;

1, it be'ing understood that at the commence;

-ment of the rising movement of the valvef23 the. springs 30 will assistsuch movement as the position shown in Fig. 1. .As the engine starts upthe valve 28 will rise more and more, ope'ningthe passage 28 degree.Owing to the cone member 21v the opening of and gradually increased asthe valve 28 rises. As the engine reaches its -maximum speed the balls32 will engage the ring 4 and stop they are intended-to balancethe valve28 in v to a greater the valve port 28 will be steadily the upwardmovement of the valve 28 after the balls 32 have been depressed .untilthe upper rims ofthe members 31 engage the ring 4, it being understoodthat the balls 32, piston 33 and spring 34 serve as shock absorbers orbuffer devices to prevent ounding of the valve 28 when the engine 1srunning at maximum speed. Upon the engine slowing down the reverse ofthe foregoing operations will take-place until the parts are restored tothe full line position shown in Fig. 1 of the drawings.

It should be understood, in operation the throttle valve 51s controlledin the usual manner to control the passage through the p p 1 w From theforegoing description taken in connection with the accompanying drawingsit is thought the complete construction, operation and many advantagesof'our invention will be understood by those skilled in the art to whichit appertains. 1

What we claim is 1. A carbureter comprising a casing having acentralpassage and inclosing a float chamber, a float withinsaid float.chamber,

said casing I lever pivoted in said extension, a valve in said extensioncooperatively connected with said float lever,'means for admittingasolene through said valve into the float c am: her, a'cap for saidcasing-having a central pipe member. projecting into said centralpassage, a tubular air valve carried oil-sa d having an extension and afloat pipe member, .a gasolene valve mounted -within the central passageof said casing, pipes connecting the casing of said gasolene valve withsaid floatchamber, said air valve having a passage to permit projectionof moves.

pipe member, a tubular air valve carried on said pipe member, a gasolenevalve mounted Within the central passage of said casing, pipesconnecting the casing ofsaid gasolene valve with said float chamber,said air valve having a passage to permit projection of saidgasolene'valve casing'means carried by said gasolene valve casingcooperating with said air valve to vary the areaof said air valvepassage as said air valve, moves, a seat for said air valve carried bythe casing of said gasolene valve, and resilient members for supportingsaid air valve when in itsinoperative positlon',

3. 2r carburete'r comprising a casing having a central passageand-'inclosing a float chamber, a float within said float chamber, saidcasing having annextension and a float lever pivotedin said,extension,'a valve in said extension coiiperatively connected with saidfloat lever, means for admitting gasolene through said valve intothefloat chamber, acap for said casing having a central pipe member, atubular. a1r valve carried on said pipe member, a gasolene valve mountedwithin the central passage of said casing, pipes connecting the casingof said gasolene valve with said float chamber, said air valve having apassage topermit projection of said throttle valve casing, means carriedby said gasolene valve casing coiiperating with said air valve to varythe area of said air valve passage as said air valve moves, and meansfor resiliently supporting said air. valve and limiting its movement inone direction.

4. A, carbureter comprising a casing havinga central passageinclosing afloat chamber, 'a float Within said float chamber, said casing having anextension and a float lever pivoted in said extension, a valve in saidextension cooperatively connected with said float! lever, means foradmitting gasolene 'throu hsa id valve into the float chamber, a cap orsaid casing havinga central pipe member, a, tubular air valve carried onsaid pipe member, a gasolene valve mountedwithin the central passage ofsaid casing, pipes connecting the casing of said gasolene valve withsaid float chamber, said air valve having a passage to permit projectionof said gasolene valve casing, and means carried by said gasolene" valvecasing cooperating with said a1r valve to vary the area of said airvalve passage as sa1d a1r valve moves, and

means for resiliently supporting said air valve and limiting itsmovement in one direction together withmeans for limiting the movementof said air valve in an opposite direction.

5. A carbureter comprising a casing having a central passage inclosing afloat chamber, a float within said float chamber, said casing having anextension and a float lever pivoted in said extension, a valve in saidextension coiiperatively connected with said float lever, means foradmitting gasolene through said valve into the-float chamber, a cap forsaid gasolene having a central pipe member, a tubular air valve carriedon said pipe member, a gasolene valve mounted within the central passageof said casing, pipes connecting the casing of said gasolene valve withsaid float chamber, said air valve having a passage to permit projectionof said gasolene valve casing, means carried by said gasolene valvecasing coiiperating with said air valve to vary the area of said airvalve passage as said air valve moves, means for resiliently supportingsaid air valve and limiting its movement in one direction together Withmeans for limiting the movement of said air valve in an oppositedirection,

"' said l-astnamed limiting means including buffer devices.

G. A carburetor comprising a casing hav ing an outer wall and an innerwall inclosing a float chamber and providing a central passage throughsaid casing, said casing being open at the top, a ring closing theopening to said float chamber at the top, a valve,

,a float in said float chamber cooperatively connectedwith andcontrolling said valve, a. gasolene valve' and its casing mounted insaid central passage, pipes connecting said gasolene valve casing withsaid gasolene chamber, a cap for said casing, a pipe proj'e'ctingthrough said cap, a cylindrical air valve embracing said pipe and havingan annular flange at one end, said flange having a passage, a valve seatfor said air valve supported on said g'asolene valve casing, and bufferdevices beneath said air valve to hold it in its inactive position.

7. A carburetor comprising a casing having an outer wall and an innerwall inclosing a float chamber and providing a centralpassage throughsaid casing, said casing be ing open at the top, a ring closing the opening to said float chamber at the t0p, a valve,

awgasolene. valve and its casing mounted in said central passage, pipesconnecting said gasolene valve casing with said 'gasolene chamber, a capfor said casing, a pipe proj'ecting'through said cap, a cylindrlcal airvalve embracingsaid pipe and having an annular flange at one end toleave a passage, a valve seat for said air valve supported on saidgasolene valve casing, and means for assisting said air 'valve to moveat the commencement of its movement.

w 8. A carbureter comprising a casing having anouter wall and an innerwall 1nclosing a float chamber and providing a central passage throughsaid casing, said casing being open at the top, a ring closing theopening to said float chamber at the top, a valve, afloat in said floatchamber cooperatively connected with and controlling said valve, agasolene valve and its casing mounted in said central passage, pipesconnecting said gasolene valve casing with said gasolene chamber, a capfor said casing, a 1pc projecting through said cap, a cylm rical airvalve embracing said p1pe and having an annular flange at one end'toleave a passage, a valve seat for said all valve supported on saidgasolene valve casing, means tor assisting said air valve to move at thecommencement of its movement,=said last. named means comprising a platemounted on said gasolene va ve' casing, telescopic members joining saidplate With said an valve and means within said telescopic memberscontinuously tending to separate the same.

9. A carbureter comprising a casin having an, outer wall and'an innerwall moles-- ing a float chamber and providing a central assa'ge throughsaid casing, said casing being open at the top, a ring closingthe open--ing to said float chamberat the top, a valve,

.a float in said float chamber coiiperatively connected with andcontrolling said valve, a gasolene valve and its casing; mounted in saidcentral passage, pipes connecting said gasolene valve casing with saidgasolene chamber, a cap forsaid casing,.a ipe' projecting through saidcap, a cylin r cal airvalve embracing said pipe' and having an annularflange at one end to leave'a passage, a valve seat for said air valvesup orted in said gasolene valve casing, means or assisting said airvalve to move at the commencement of it movement, said last named meanscomprising a plate mounted on said .gasolene valve casing, telescopicmembers joining said plate with .said air valve, means within saidtelescopic members continuously tending to separate the same, and-meansfor limiting the movement of said'air valve in one direction.

10. A carbureter comprising a' casing having an outer wall and an innerwall lnclosinga float chamberand providing a central passage throughsaid casing, said casing befluid chamber, means for controllin ing openat the top, a ring closing the opening to said float chamber at'the top,a valve,

a float ,1n said float chamber cooperatively connected with andcontrolling said valve, a-gasolene valve and itscasing mounted in saidcentral passage, pipes connecting said gasolene valve casing with saidgasolene chamber, a cap for said casing, a

valve embracing said pipe and having an annular flange at one end toleave a passage, a valve seat for said air-valve supported on saidgasolene valve casing, means tor assisting said airvalveto move at thecommence-v ment of its movement, said last named means comprising aplate mounted on said 'gasolene valve casing, telescopic members joiningsaid plate with said air valve, means within said to form a continuationof said pipe member and control the passage of air therethrough.

12. In a carbureter, 'a casing inclosing a the admission of fluld tosaid chamber, said casing having a central passage, a pipe memberprojected into said central passage and forming an outlet therefor,agasolene valve I mechanism projected into said central pas sage todischargeinto said pipe member, an air valve having a tubular portion toform a continuation of said pipe'member and con trol the passage of airtherethrough, an means carried by said gasolenevalve mechanism andcoiiperating with said air valve P-P 9"- ecting through said cap, a cyrlcal air to vary the area of the air passage therethrough. v

13. In a carbureter, a casing inclosing a fluid chamber, means forcontrolling the admission of fluidto said chamber, said casing having acentral assa'ge, a pipemember projected into said central passage andforming an outlet therefor, a gasolene valve mechanism projected intosaid central passage to discharge i'to said pipe member, an air valvehaving-a tubular-portion to. form a continuation of said pipe member andcontrol the passage of air therethrough,

- said air valve being movable on said pipe member, and bufier devicesfor arrest-ing the movement of said air valve.

- 14 111 a carbureter, ajcasing mclosing' a fluid chamber, means for.controlling the aderases i'nission of fluid to said chamber, said casinghav ng a central passage, a pipe member pro ected llltOSfiJCl centralpassage and forming an outlet therefor, a gasolene valve mechanismprojected into said central passage, to discharge into said pipe member,an air valve having a tubular portion to form a continuation of saidpipe member and con trolthe passage of air therethrough, means carriedby said gasolene valve mechanism and cooperating with said air valve tovary the area of the air passage therethrough,

said air valve being movable on said pipe" member, and buffer devicesfor arresting the movement of said air valve.

15.111 a carbureter, a casing inclosing a fluid chamber, means forcontrolling the admission of fluid to said chamber, said casing having acentral passage, a pipe member projected into said central passage andforming an outlet therefor, a gasolene valve mechanism projected intosaid central passage to' dischargeinto said pipe member, an air valvehaving a tubular portion to form a continuation of said pipe member andcontrol the passage of air therethrough, said air valve being movable onsaid pipe member, buffer devices for arresting the movement of said airvalve, and means varying the action of said butter devices and limitingthe movement of said air valve.

10. In a carbureter, a casing inclosing a fluid chamber, means for'controllin the admission of fluid to said chamber, said casing having acentral passage, a pipe member projected into said central passage, andforming an outlet therefor, a gasolene valve mechanism projected intosaid central passage to discharge into said pipe member, an air valvehaving a tubular portion to form a cc-iitimiation of said pipe memberand control the passage of air therethrough, means carried by saidgasolene valve mechanism and cooperating with said air valve to vary thearea of the air passage therethrough, said air valve being movable onsaid pipe member, buffer devices for arresting the movement of said airvalve, and means varying the action of said buffer devices and limitingthe movement of said air valve.

17. A carburetor comprising a casing having a pair of annular Wallsinclosing an open ended float chambenmeans for admitting fluid into saidfloat chamber, and means for governing the admission of said fluid intosaidfloat chamber, a cap for said casing, said casing having a cent :11passage through the same,

an outlet pipe member for said central passage, a tubular air valveWithin said central passage and having a portion forming a cutoif forsaid central passage, said cut-ofi" portion having anairpass, agasolen'e valve projected into said central passage and through said airpass, said air valve being longitudinally movable, and means carried onsaid gasolene valve for varying the area of said air pass as said airvalve is moved.

18. A carbureter comprising a casing having a pair of annular Wallsinclosing an open ended float chamber, means for admitting fluid intosaid float chamber, means for governing the admission of said fluid intosaid float chamber, a cap for said casing, said casing having a centralpassa e through the same, outlet pipe member t br said central passage,a tubular air valve Within said central passage and having a portionforming a cut--ofi' for said central passage, said outoff portion havingan air pass, a gasolene valve projected into said central passage andthrough said air pass,sa1d air valve belng longitudinally movable, meanscarried on said gasolene valve for varying the area of said air pass assaid air valve is moved, and adjustable bufi'er devices beneath said airvalve for arresting the movement of said air valve in one direction andassisting its movement in an opposite direction.

SILAS GHRISTOFFERSON. NELSON T. WOODS. YVILLIAM E. JONES. lVitnesses:NINA E. Woon, JOHN DITGHBURN,

